promotions deadly slow.. after insp the next grade is again 16 (Deputy superintendent).. i have worked along with custom inspectors and DS for over a year.. corruption is rampant..most of the people join it for earning illegal income. however, bright prospects are that its not a very tough job, charm of uniform (insp chaand taara lgata hy).. PR bht bht hoti hy.. lot of respect.. I must say its much much better than ASF, ANF, Ranger and other grade 16 jobs.. so go for it..